You will need to add an ultrasound sensor and the LED board to your robot.
Ultrasound sensor
Be sure that the output of the Ultrasound sensor goes to Interrupt 1 and the input goes to Port 11 on the vex controller. The sensor can be mounted in any way but you can mount it to a servo for rotation if you want. Also, make sure that the Ultrasound points forward on your robot.
LED Board
Make sure that the triangle points towards the front of the robot. It should also point in the same direction as your Ultrasound sensor starts at.
Design Modifications
You will need to add an ultrasound sensor and the LED board to your robot.
Ultrasound sensor
Be sure that the output of the Ultrasound sensor goes to Interrupt 1 and the input goes to Port 11 on the vex controller. The sensor can be mounted in any way but you can mount it to a servo for rotation if you want. Also, make sure that the Ultrasound points forward on your robot.LED Board
Make sure that the triangle points towards the front of the robot. It should also point in the same direction as your Ultrasound sensor starts at.